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Power Brick Controller User Manual
Special Functions & Troubleshooting
191
Serial Encoders
The Power Brick Controller provides interfaces for many of the most popular serial encoder protocols.
For most of these interfaces, the receiving logic can detect that no data has been received in response to
the cycle’s “position request” output, and set a “timeout error” flag that can be read by the processor. This
flag bit can be used to detect encoder loss.
This “timeout error” flag is bit 31 of the element
PowerBrick[].Chan[].SerialEncDataB
.
It is also possible to utilize an error-checking mechanism in the data such as parity or cyclic redundancy
check (CRC) bits. The Power Brick Controller can evaluate these mechanisms and determine whether the
data set was valid or not. This is particularly recommended for the SSI protocol, where the data patterns
cannot be used to detect a timeout error. For the SSI protocol, the parity error flag is bit 31 of
PowerBrick[].Chan[].SerialEncDataB
.
Automatic Kill Action for Serial Encoders
Arming the automatic kill action for serial encoder protocols with a "timeout error" flag (EnDat, HiperFace,
Sigma I, Sigma II/III/V, Tamagawa, Panasonic, Mitutoyo, and Kawasaki):
In this mode, the status of the encoder loss can be monitored in the motor status window in the IDE software
or using the motor element bit
Motor[].EncLoss
.
Note
Setting
Motor[].pEncLoss
= 0 disables the automatic kill action.
Note
The same settings are valid for an SSI encoder with parity checking
to use the parity-error bit.
Motor[
1
].pEncLoss = PowerBrick[
0
].Chan[
0
].SerialEncDataB.a
Motor[
1
].EncLossBit =
31
// Time out error bit number
Motor[
1
].EncLossLevel =
1
// High true fault
Motor[
1
].EncLossLimit =
0
Содержание PBC Series
Страница 5: ......
Страница 74: ...Power Brick Controller User Manual Connections and Software Setup 74 Motor 1 HomeOffset 0...
Страница 203: ...Power Brick Controller User Manual Appendix A Digital Inputs Schematic 203 APPENDIX A DIGITAL INPUTS SCHEMATIC...
Страница 204: ...Power Brick Controller User Manual Appendix B Digital Outputs Schematic 204 APPENDIX B DIGITAL OUTPUTS SCHEMATIC...
Страница 205: ...Power Brick Controller User Manual Appendix C Analog I Os Schematics 205 APPENDIX C ANALOG I OS SCHEMATICS...
Страница 206: ...Power Brick Controller User Manual Appendix C Analog I Os Schematics 206...
Страница 207: ...Power Brick Controller User Manual Appendix D Limits Flags Schematic 207 APPENDIX D LIMITS FLAGS SCHEMATIC...